William henby daniels



- W. H. DANIELS.

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. No. 352,807. PatentedNov. 16,1886. I

N PETERS Phnkrlvifiogmpher Washmglc LD C UN TED STATES PATENT OFFICE.

WILLIAM HENRY DANIELS, SOUTHSEA, ENGLAND.

CONSTRUCTION OF SHIPS, 80c.

SPECIFICATION forming part of Letters Patent N 0. 352,807, dated November 16, 1886.

I Application filed February 9, 1886. Serial No. 191.314. (Mode1.)

.hulls of sail-boats, and has for its object to furnish a model which shall be speedy and safe, presenting the least possible obstruction to the movement of the boat through the water, and at the same time having a breadth of beam andother peculiarities of construction which render it almost incapable of being capsized.

In the drawings, Figure l is a perspective view of the bottom of the boat, the hull being partly upturned to show it. Fig. 2 is a bottom plan View thereof. Fig. 3 is a vertical longitudinal section through the center of the hull taken on the line 3 3 of Fig. 2. Fig. 4 is a transverse vertical section on the line 4 4 of Fig. 2. Fig. 5 is a similar section on line 5 5 of Fig. 2. Fig. 6 is a similar section on line 6 6 of Fig. 2; and Fig. 7 is a vertical longitudinal section on the curved line 7 7 of Fig. 2, extending from stem to stern, through one of the halves of the hull, the dotted line therethrough indicating the upper line of the trough formed by the junction of said halves.

Like letters of reference mark the same parts in all the figures.

My invention may be said to consist, essentially, of a double-ended or skiff-pointed hull, which, instead of being provided with a central downward-projecting keel, as is used in such constructions, is grooved out from stem to stern, said groove extending from a point slightly below the waterline of the stem to a similar point on the stern, the top line (or bottom when inserted) of said groove being horizontal and but slightly below the waterline, so that there is presented a broad beam to the water and a rising bow and stern, the water in the groove acting in lieu of a keel to hold to its course, and the rising bow and stern substantially, if not entirely and absolutely, preventing dead-water and forward resistance.

Referring to the drawings by letters, A marks the bow or stem, and B the stern at the deckline, and A and B the same parts at the line of the top of the central inserted groove in the bottom. The line 6 6 in Fig. 3 is the line of greatest beam, and is the line upon which, as before stated, the sectional view, Fig. 7, is drawn. From the points at which this line intersects the side of the boat the sides taper to both bow and stern.

The sectional views in Figs. 5 and 6 would seem to indicate that the hull is composed of two separate narrow hulls secured together; but such is not the case, as may be seen by reference to the other figures.

Figs. 1 and 2 show that the bow and stern are shaped down to the points A and B, as though no division whatever existed. From and included in a curved line on each side of the bottom connecting these points is the bottom of the hull, which has a straight groove,

0, extending from A to B, the portion of the hull left out or removed being substantially that of an inverted keel, as may be plainly seen by reference to the dotted lines in Figs.

5 and 6, in which figuresthe similarity in contour of the groove 0 and the part indi- 8o cated in dotted lines below dotted lines 0 c is very plainly shown. This groove 0, when the hull is in the water, will be filled with water, and the effect produced will be similar to that produced in a catamaran, the body of water acting to hold the boat' to its course and prevent drifting. At the same time the draft is very light, the hull sinking in the water just barely over theline A B.

The dotted lines in Figs. 5 and 6 are intended to show distinctly the difference between my model and an ordinary single-hull keel-boat.

Having thus fully described my invention,

what I claim, and desire to secure by Letters 9 5- Patent of the United States, is-

A hull for vessels, having its bottom centrally provided'with an external inverted-V gitudinally through said bottom, and interhand in the presence of two subscribing wit- 10 sects at each end with the stem or cut-water nesses.

near the water-line, the sides of said channel T 4 5 being curved and merging gradually into the ILLIAM HENRY DANIELS line of curvature of each division of the bot- Witnesses:

tom adjacent to said side, as shown and de- J. MAIN,

scribed. H. J. MILLARD.

i shaped channel or trough, which extendslon- In testimony whereof I have hereto set my 1 

